#include <ctype.h>
#include <stdio.h>
#include <string.h>

/* Define a typedef for use in our struct. */

typedef int (*isfunc_t) (int);

/* Define a macro to initialize the elements of the struct. */

#define F(x) {x, #x}

struct iser {
    isfunc_t f;
    const char * name;
}
isers[] = {
    F (isalnum),
    F (isalpha),
    F (isascii),
    F (isblank),
    F (iscntrl),
    F (isdigit),
    F (isgraph),
    F (islower),
    F (isnumber),
    F (isprint),
    F (ispunct),
    F (isspace),
    F (isupper),
    F (isxdigit),
};

#define n_isers (sizeof (isers)/sizeof (struct iser))

/* Print a header for the table, going vertically. */

static void
print_header ()
{
    int i;
    int max_len = 0;
    int l[n_isers];
    const char * spacer = "          ";
    for (i = 0; i < n_isers; i++) {
        l[i] = strlen (isers[i].name);
        if (l[i] > max_len) {
            max_len = l[i];
        }
    }
    for (i = 0; i < max_len; i++) {
        int j;
        printf ("%s|", spacer);
        for (j = 0; j < n_isers; j++) {
            if (i < l[j]) {
                printf ("%c|", isers[j].name[i]);
            }
            else {
                printf (" |");
            }
        }
        printf ("\n");
    }
}

static void
print_types ()
{
    int c;
    for (c = 0; c < 128; c++) {
        int i;
        printf ("%02X %03o ", c, c);
        if (isprint (c)) {
            printf ("%c  ", c);
        }
        else {
            printf ("-- ");
        }
        printf ("|");
        for (i = 0; i < n_isers; i++) {
            int ok;
            ok = isers[i].f (c);
            if (ok) {
                printf ("O");
            }
            else {
                printf ("X");
            }
            printf ("|");
                            
        }
        printf ("\n");
    }
}

int main ()
{
    print_header ();
    print_types ();
    return 0;
}